Reserve 16 "architecture-specific" syscall numbers starting at 244. Allow use of the sys_sync_file_range2() API with the generic unistd.h by specifying __ARCH_WANT_SYNC_FILE_RANGE2 before including it. Allow using the generic unistd.h to create the "compat" syscall table by specifying __SYSCALL_COMPAT before including it. Use sys_fadvise64_64 for __NR3264_fadvise64 in both 32- and 64-bit mode. Request the appropriate __ARCH_WANT_COMPAT_SYS_xxx values when some deprecated syscall modes are selected. As part of this change to fix up the syscalls, also provide a couple of missing signal-related syscall prototypes in <linux/syscalls.h>. Signed-off-by: Chris Metcalf <cmetcalf@xxxxxxxxxx> --- include/asm-generic/unistd.h | 26 ++++++++++++++++++++------ include/linux/syscalls.h | 4 ++++ 2 files changed, 24 insertions(+), 6 deletions(-) diff --git a/include/asm-generic/unistd.h b/include/asm-generic/unistd.h index 6a0b30f..30218b4 100644 --- a/include/asm-generic/unistd.h +++ b/include/asm-generic/unistd.h @@ -18,7 +18,7 @@ #define __SYSCALL(x, y) #endif -#if __BITS_PER_LONG == 32 +#if __BITS_PER_LONG == 32 || defined(__SYSCALL_COMPAT) #define __SC_3264(_nr, _32, _64) __SYSCALL(_nr, _32) #else #define __SC_3264(_nr, _32, _64) __SYSCALL(_nr, _64) @@ -241,8 +241,13 @@ __SYSCALL(__NR_sync, sys_sync) __SYSCALL(__NR_fsync, sys_fsync) #define __NR_fdatasync 83 __SYSCALL(__NR_fdatasync, sys_fdatasync) +#ifdef __ARCH_WANT_SYNC_FILE_RANGE2 +#define __NR_sync_file_range2 84 +__SYSCALL(__NR_sync_file_range2, sys_sync_file_range2) +#else #define __NR_sync_file_range 84 -__SYSCALL(__NR_sync_file_range, sys_sync_file_range) /* .long sys_sync_file_range2, */ +__SYSCALL(__NR_sync_file_range, sys_sync_file_range) +#endif /* fs/timerfd.c */ #define __NR_timerfd_create 85 @@ -580,7 +585,7 @@ __SYSCALL(__NR_execve, sys_execve) /* .long sys_execve_wrapper */ __SC_3264(__NR3264_mmap, sys_mmap2, sys_mmap) /* mm/fadvise.c */ #define __NR3264_fadvise64 223 -__SC_3264(__NR3264_fadvise64, sys_fadvise64_64, sys_fadvise64) +__SYSCALL(__NR3264_fadvise64, sys_fadvise64_64) /* mm/, CONFIG_MMU only */ #ifndef __ARCH_NOMMU @@ -627,8 +632,14 @@ __SYSCALL(__NR_accept4, sys_accept4) #define __NR_recvmmsg 243 __SYSCALL(__NR_recvmmsg, sys_recvmmsg) +/* + * Architectures may provide up to 16 syscalls of their own + * starting with this value. + */ +#define __NR_arch_specific_syscall 244 + #undef __NR_syscalls -#define __NR_syscalls 244 +#define __NR_syscalls 260 /* * All syscalls below here should go away really, @@ -694,7 +705,8 @@ __SYSCALL(__NR_signalfd, sys_signalfd) #define __NR_syscalls (__NR_signalfd+1) #endif /* __ARCH_WANT_SYSCALL_NO_FLAGS */ -#if __BITS_PER_LONG == 32 && defined(__ARCH_WANT_SYSCALL_OFF_T) +#if (__BITS_PER_LONG == 32 || defined(__SYSCALL_COMPAT)) && \ + defined(__ARCH_WANT_SYSCALL_OFF_T) #define __NR_sendfile 1046 __SYSCALL(__NR_sendfile, sys_sendfile) #define __NR_ftruncate 1047 @@ -740,6 +752,7 @@ __SYSCALL(__NR_getpgrp, sys_getpgrp) __SYSCALL(__NR_pause, sys_pause) #define __NR_time 1062 #define __ARCH_WANT_SYS_TIME +#define __ARCH_WANT_COMPAT_SYS_TIME __SYSCALL(__NR_time, sys_time) #define __NR_utime 1063 #define __ARCH_WANT_SYS_UTIME @@ -801,7 +814,7 @@ __SYSCALL(__NR_fork, sys_ni_syscall) * Here we map the numbers so that both versions * use the same syscall table layout. */ -#if __BITS_PER_LONG == 64 +#if __BITS_PER_LONG == 64 && !defined(__SYSCALL_COMPAT) #define __NR_fcntl __NR3264_fcntl #define __NR_statfs __NR3264_statfs #define __NR_fstatfs __NR3264_fstatfs @@ -848,6 +861,7 @@ __SYSCALL(__NR_fork, sys_ni_syscall) #endif #define __ARCH_WANT_SYS_RT_SIGACTION #define __ARCH_WANT_SYS_RT_SIGSUSPEND +#define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND /* * "Conditional" syscalls diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 057929b..d39ddb3 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -387,9 +387,13 @@ asmlinkage long sys_init_module(void __user *umod, unsigned long len, asmlinkage long sys_delete_module(const char __user *name_user, unsigned int flags); +asmlinkage long sys_rt_sigaction(int sig, const struct sigaction __user *act, + struct sigaction __user *oact, + size_t sigsetsize); asmlinkage long sys_rt_sigprocmask(int how, sigset_t __user *set, sigset_t __user *oset, size_t sigsetsize); asmlinkage long sys_rt_sigpending(sigset_t __user *set, size_t sigsetsize); +asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize); asmlinkage long sys_rt_sigtimedwait(const sigset_t __user *uthese, siginfo_t __user *uinfo, const struct timespec __user *uts, -- 1.6.5.2 -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html